Transcriptome Responses to Combinations of Stresses in Arabidopsis

  • Simon Rasmussen
    Center for Biological Sequence Analysis (S.R., H.B.N.) and Department of Systems Biology (S.R., P.F., H.B.N.), Technical University of Denmark, Lyngby, Denmark DK–2800
  • Pankaj Barah
    Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway N–7491 (P.B., A.M.B.)
  • Maria Cristina Suarez-Rodriguez
    Department of Biology, University of Copenhagen, Copenhagen, Denmark, DK–2200 (M.C.S.-R., S.B., J.M.); and
  • Simon Bressendorff
    Department of Biology, University of Copenhagen, Copenhagen, Denmark, DK–2200 (M.C.S.-R., S.B., J.M.); and
  • Pia Friis
    Center for Biological Sequence Analysis (S.R., H.B.N.) and Department of Systems Biology (S.R., P.F., H.B.N.), Technical University of Denmark, Lyngby, Denmark DK–2800
  • Paolo Costantino
    Department of Biology and Biotechnology, University of Rome La Sapienza, 00185 Rome, Italy (P.C.)
  • Atle M. Bones
    Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway N–7491 (P.B., A.M.B.)
  • Henrik Bjørn Nielsen
    Center for Biological Sequence Analysis (S.R., H.B.N.) and Department of Systems Biology (S.R., P.F., H.B.N.), Technical University of Denmark, Lyngby, Denmark DK–2800
  • John Mundy
    Department of Biology, University of Copenhagen, Copenhagen, Denmark, DK–2200 (M.C.S.-R., S.B., J.M.); and

抄録

<jats:title>Abstract</jats:title> <jats:p>Biotic and abiotic stresses limit agricultural yields, and plants are often simultaneously exposed to multiple stresses. Combinations of stresses such as heat and drought or cold and high light intensity have profound effects on crop performance and yields. Thus, delineation of the regulatory networks and metabolic pathways responding to single and multiple concurrent stresses is required for breeding and engineering crop stress tolerance. Many studies have described transcriptome changes in response to single stresses. However, exposure of plants to a combination of stress factors may require agonistic or antagonistic responses or responses potentially unrelated to responses to the corresponding single stresses. To analyze such responses, we initially compared transcriptome changes in 10 Arabidopsis (Arabidopsis thaliana) ecotypes using cold, heat, high-light, salt, and flagellin treatments as single stress factors as well as their double combinations. This revealed that some 61% of the transcriptome changes in response to double stresses were not predic from the responses to single stress treatments. It also showed that plants prioritized between potentially antagonistic responses for only 5% to 10% of the responding transcripts. This indicates that plants have evolved to cope with combinations of stresses and, therefore, may be bred to endure them. In addition, using a subset of this data from the Columbia and Landsberg erecta ecotypes, we have delineated coexpression network modules responding to single and combined stresses.</jats:p>

収録刊行物

  • Plant Physiology

    Plant Physiology 161 (4), 1783-1794, 2013-02-27

    Oxford University Press (OUP)

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